American Chemical Society
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Multifunctional Luminescent Porous Organic Polymer for Selectively Detecting Iron Ions and 1,4-Dioxane via Luminescent Turn-off and Turn-on Sensing

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journal contribution
posted on 2016-08-24, 00:00 authored by Dingxuan Ma, Baiyan Li, Zhonghua Cui, Kang Liu, Cailing Chen, Guanghua Li, Jia Hua, Benhua Ma, Zhan Shi, Shouhua Feng
The first case of selective Fe3+ ions and 1,4-dioxane luminescent sensor based on a porous organic polymer, POP-HT, was synthesized by reaction of tetra­(p-aminophenyl)­methane and chromophoric 2,5,8-trichloro-s-heptazine. POP-HT displayed prominent fluorescence quenching or enhancement in the presence of Fe3+ ion or 1,4-dioxane. Moreover, an excellent linear relationship was established between luminescent intensity and the corresponding Fe3+ ion or 1,4-dioxane concentration. The mechanisms of luminescence quenching and enhancement were also studied by both experiment and theoretical calculation. The results of this study suggest that POP-HT can work as an effective luminescent indicator for qualitative and quantitative detection of Fe3+ ions and 1,4-dioxane in aqueous solution over other metal ions and organic solvents.